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Envision Series Geothermal Indoor Split Heat Pumps • R-410A Refrigerant • 2 - 6 Ton Single Speed • 2 - 6 Ton Dual Capacity Envision Installation Information Water Piping Connections Desuperheater Connections Electrical Startup Procedures Troubleshooting Preventive Maintenance IM1592 06/07 ENVISION SERIES INSTALLATION MANUAL Model Nomenclature NDZ049A1 1AC Coax Options Model Type C= Copper N= Envision N= Cupronickel Compressor Type Open Option D= Dual Capacity A= Standard S= Single Speed Hot Water Option Cabinet Configuration 0= None Z= Indoor Split 1= Hot Water Gerneration with factory installed pump Unit Capacity Voltage Vintage 1= 208-230/60/1 A= Current Physical Characteristics Model 022 030 036 042 048 060 070 026 038 049 064 072 Compressor (1 each) Single Speed Scroll Dual Capacity Scroll Factory Charge R410a, oz [kg] 56 [1.59] 56 [1.59] 56 [1.59] 74 [2.1] 90 [2.55] 92 [2.61] 108 [3.06] 52 [1.47] 56 [1.59] 90 [2.55] 92 [2.61] 104 [2.95] Coax and Water Piping Water Connections Size - Swivel- in [mm] 1 [25.4] 1 [25.4] HWG Connection Size - Swivel - in [mm] 1 [25.4] 1 [25.4] Coax & Piping Water Volume - gal [l] 0.7 [2.6] 1.0 [3.8] 1.3 [4.9] 1.3 [4.9] 1.6 [6.1] 1.6 [6.1] 2.3 [8.7] 0.7 [2.6] 1.3 [4.9] 1.6 [6.1] 1.6 [6.1] 2.3 [8.7] Weight - Operating, lb [kg] 164 [74] 174 [79] 212 [96] 213 [97] 246 [112] 251 [114] 292 [132] 189 [186] 236 [107] 250 [113] 271 [123] 290 [132] Weight - Packaged, lb [kg] 184 [83] 194 [88] 232 [105] 233 [106] 266 [121] 271 [123] 312 [142] 209 [95] 256 [116] 270 [122] 291 [132] 310 [141] Rev.:6/7/07 Notes: All units have TXV expansion devices, and 1/2" [12.2mm] & 3/4" [19.1mm] electrical knock...